Menu
22/Nov/2024

Is your toilet constantly running water? The most common reason for a consistently running toilet is a deteriorated or leaking flapper that needs to be replaced. A running toilet can waste up to 200 gallons of water per day, or even more depending on the flow rate. If this is a problem you’re currently experiencing, get in touch with a professional plumbing service for toilet repair.

blogdetail

Latest Blog Posts

blogdetail1 Feb 20, 2026
What Affects the Cost of Water Heater Installation?

Let's be frank: Everything costs more than it did two years ago. Your grocery bill is higher, gas prices bounce around like a yo-yo, and if your water heater just…

Read More
blogdetail1 Feb 15, 2026
Submersible vs Pedestal Sump Pumps

If you live in Florida, then you know how fast a sunny afternoon can turn into a heavy downpour. In a low-lying state where the water table sits high and…

Read More

What Is A Toilet Flapper?

This is a rubber component that seals the flush valve opening to keep water in the tank. When you flush the toilet, a chain connected to the flush handle pulls up the flapper to allow water from the tank to rush into the bowl. Once enough water has been released, the flapper closes, creating a tight seal between the tank and the bowl.

Just like the other components of your toilet, the flapper can wear out due to age, and its ability to form a tight seal can deteriorate. A worn-out flapper will cause the toilet to constantly run because the seal is compromised. It can also lead to phantom flushes, a condition where the toilet seems to flush on its own, even when no one has used it. Thankfully, replacing a damaged toilet flapper is a DIY job that you can easily accomplish with a few simple tools. If you encounter any difficulties, contact a professional plumber for help.

How to Test If a Toilet Flapper Is Leaking

In most cases, it’s easy to tell when a toilet flapper is leaking. You’ll hear the water continuously running in the toilet tank. However, there are cases where the leak is very slow and you may not hear it. In such cases, you’ll want to perform a dye test to be sure. Add a few drops of food coloring to the tank and check the bowl after 30 minutes. If the water in the bowl is colored, it means the flapper is leaking.

How to Replace Toilet Flapper

  • Step 1: Drain the Tank

Turn off the water supply and flush the toilet to remove any water in the tank. Next, remove the tank lid. Simply lift it off and put it aside—be careful not to drop it or damage the tank.

  • Step 2: Disconnect the Chain

Unhook the chain from the flush handle lever and gently lift the deteriorating flapper off the overflow tube. Some are screwed in place, so you may need a screwdriver to remove them. If yours is clipped on, you may need to use a flathead screwdriver to gently pry the clips open.

  • Step 3: Install the New Flapper

With the old flapper out of place, install the new one over the overflow tube and clip or screw it into place. Attach the chain to the flush handle lever and adjust the length as needed.

  • Step 4: Test the Flapper

Turn the water supply back on and flush the toilet. Observe the flapper to ensure it's sealing properly and the water level in the tank is correct.

These are the simple steps to follow to replace your toilet flapper and prevent water waste. If you need help, get in touch with a reputable plumbing repair service providing toilet repair services. The team at Mr. Rooter Plumbing is on standby to help you restore your toilet to good working condition.

Recent Posts

Feb 20, 2026 Plumbing

What Affects the Cost of Water Heater Installation?

Let's be frank: Everything costs more than it did two years ago. Your grocery bill is higher, gas prices bounce around like a yo-yo, and if your water heater just…

Feb 15, 2026 Plumbing

Submersible vs Pedestal Sump Pumps

If you live in Florida, then you know how fast a sunny afternoon can turn into a heavy downpour. In a low-lying state where the water table sits high and…

Feb 04, 2026 Plumbing

Can You Live in Your Home During Repiping?

Your plumber just delivered the news: your home needs repiping. Those galvanized steel pipes that have served faithfully for 60 years are finally giving up. Or…

Jan 30, 2026 Plumbing

Why Water Leaks Are Harder to Spot Than You Think

If you notice water pooling on your floor, you may feel frustrated… but you’re also fortunate. Visible leaks announce themselves early. Hidden leaks do not. In fact, many of the…